POWER TRANSMISSION MECHANISM

摘要

An engaging projection is engaged with an engaging recess to connect a pulley and a receiving member to each other so that power is transmitted. The engaging recess deforms with respect to the pulley and the receiving member. During the power transmission between the pulley and the receiving member, an elastic member permits engaging recess to deform, thereby enabling the pulley to rotate relative to the receiving member in a predetermined angular range. In this state, the engaging projection normally abuts against a sliding surface of the engaging recess at a neutral position, and the contact position of the engaging projection and the engaging recess separates from the neutral position in accordance with the increase of the load on the receiving member. As the contact position separates from the neutral position, the inclination angle of the sliding surface with respect to the circumferential direction of the rotary bodies gradually increases. <IMAGE>